AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Polyandrocarpa zorritensis [WoRMS] | |
Authority | (Van Name, 1931) | |
Family | Styelidae | |
Order | Stolidobranchia | |
Class | Ascidiacea | |
Phylum | Chordata | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: SW Pacific |
Life form / Life stage (?) |
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Sociability / Life stage (?) |
References (not structured): Brunetti, R., Mastrototaro, F. 2004. The non-indigenous stolidobranch ascidian Polyandrocarpa zorritensis in the Mediterranean: description, larval morphology and pattern of vascular budding. Zootaxa, 528(1), pp. 1-8. Comments: A colonial tunicate consists of many zooids, bearing many or all of the organs of a solitary tunicate, but modified to varying degrees for colonial life. Colonial tunicates of the genus Polyandrocarpa have zooids resembling solitary tunicates, rounded, oval, or club-like in shape. |
Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Asexual Sexual References: Brunetti, R. 1978. Polyandrocarpa zorritensis (Van Name, 1931) a colonial ascidian new to the Mediterranean record. Vie et Milieu, pp. 647-652. Scelzo, M., Alié, A., Pagnotta, S., Lejeune, C., Henry, P., Gilletta, L., ... Tiozzo, S. 2019. Novel budding mode in Polyandrocarpa zorritensis: a model for comparative studies on asexual development and whole body regeneration. EvoDevo, 10, pp. 1-13. Comments: Colonial tunicates reproduce both asexually, by budding, and sexually, from fertilized eggs developing into larvae. Colonies vary in size and can range from small clusters of zooids to huge spreading masses. The zooids are hermaphroditic, with eggs and sperm being produced by a single individual. |
Developmental trait (?) | Lecithotrophy Comments: The lecithotrophic (non-feeding, yolk-dependent) larva swims briefly before settlement. Swimming periods are usually less than a day, and some larvae can settle immediately after release, but the larval period can be longer at lower temperatures. Once settled, the tail is absorbed, the gill basket expands, and the tunicate begins to feed by filtering. |
Characteristic feeding method / Life stage (?) |
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Mobility / Life stage (?) |
References (not structured): Brunetti, R., Mastrototaro, F. 2004. The non-indigenous stolidobranch ascidian Polyandrocarpa zorritensis in the Mediterranean: description, larval morphology and pattern of vascular budding. Zootaxa, 528(1), pp. 1-8. |
Salinity tolerance range (?) | Venice system: 6. Polymixohaline [18-30psu] 7. Euhaline [30-40psu] References: Tobias-Santos, V., Andreoni-Pham, R., El Gharbi, D., Lebel, M., Tiozzo, S., Alié, A. 2024. Salinity-mediated limitation of asexual reproduction in the colonial ascidian Polyandrocarpa zorritensis. Frontiers in Ecology and Evolution, 12, 1332780. Comments: Rate of asexual reproduction in colonies bred at 29 or 36 ppt salinity levels, corresponding to the natural range inhabited by P. zorritensis, was higher than those grown in 40 ppt salinity, commonly found in Mediterranean marinas and harbors. |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Known References: Aiello, A., Fattorusso, E., Imperatore, C., Irace, C., Luciano, P., Menna, M., ... Vitalone, R. 2011. Zorrimidazolone, a bioactive alkaloid from the non-indigenous Mediterranean stolidobranch Polyandrocarpa zorritensis. Marine Drugs, 9(6), pp. 1157-1165. Comments: Colonial ascidians are one of the most important marine bio-resources for new bioactive substances and this justifies the considerable interest shown by chemists and pharmacologists in this class of marine invertebrates |
Known measurable environmental impact? | Known References: Stabili, L., Licciano, M., Gravina, M. F., Giangrande, A. 2016. Filtering activity on a pure culture of Vibrio alginolyticus by the solitary ascidian Styela plicata and the colonial ascidian Polyandrocarpa zorritensis: a potential service to improve microbiological seawater quality economically. Science of The Total Environment, 573, pp. 11-18. Comments: Ascidians may counteract the effects of microbial pollution. |
Included in the Target Species list? | No References: HELCOM, 2009. Alien Species and Ballast Water [PDF] Available at: https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf [Accessed 1 July 2024]. |
Association with vessel vectors (?) | Biofouling References: Brunetti, R., Mastrototaro, F. 2004. The non-indigenous stolidobranch ascidian Polyandrocarpa zorritensis in the Mediterranean: description, larval morphology and pattern of vascular budding. Zootaxa, 528(1), pp. 1-8. |
Last update by | Sandra Gečaitė, 2024-08-19 |